alpine/curl Docker Image Overview

alpine/curl

基于Alpine Linux的轻量级Docker镜像，集成了curl命令行工具，专为网络数据传输设计。支持HTTP、HTTPS、FTP等多种协议，可用于API测试、文件下载、服务监控等场景。得益于Alpine的精简特性，镜像体积小巧，启动快速，非常适合在容器化环境中执行临时网络请求或自动化任务，是开发调试、CI/CD流程及微服务健康检查的理想工具。

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alpine/curl

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Alpine-based image with just curl

NOTES: the original upstream [***] is in read-only (archived statue), its images used base image of alpine:3.7, and are 4 years old now, vulnerabilities in its image, which is risk to use it.

This repo will manage with latest alpine version, and passed trivy scan.

update

If you need HTTP/3 supported, please use another image alpine/curl-http3 at [***]

Usage

with docker run

console
$ docker run --rm alpine/curl -fsSL [***]

Or use it as alias command

alias curl="docker run --rm alpine/curl"

curl -fsSL [***]

with kubectl run

# Each execution typically takes approximately 5 to 10 seconds due to the need to pull the image and create the pod.
kubectl run curl  --rm -it  --image=alpine/curl -- -fsSL [***]

# if you want to test the service within kubernetes cluster, 
$ kubectl get service

# suppose, "productpage" is the service name, and "9080" is the service port
# productpage   ClusterIP   10.99.117.108    <none>        9080/TCP   123m

kubectl run curl --rm -it  --image=alpine/curl -- -sS productpage.default:9080/index.html

There is a rare case, that your kubernetes has istio auto injection (or similar sidecar solution) set as true, pod or containers start with network issue if istio-proxy (the sidecar) is not ready. So we need add extra option to reject that setting.

kubectl run curl --rm -it --overrides='{ "apiVersion": "v1", "metadata": { "labels": { "sidecar.istio.io/inject": "false" } } }' --image=alpine/curl --  -sS productpage.default:9080/productpage

or use it as alias command

alias kubecurl="kubectl run curl  --rm -it  --image=alpine/curl --"

kubecurl -fsSL [***]

Scan passed

The image is passed the trivy scan, you can run command to confirm

$ docker run --rm -v /var/run/docker.sock:/var/run/docker.sock \
    -v $HOME/Library/Caches:/root/.cache/  aquasec/trivy image alpine/curl

...
================================
Total: 0 (UNKNOWN: 0, LOW: 0, MEDIUM: 0, HIGH: 0, CRITICAL: 0)

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